Little Y/N: Why is soil brown?
Mycroft: It’s due to the presence of humus and iron oxides, which absorb certain wavelengths of light and reflect others, resulting in the perception of the colour brown.
Little Y/N: Why does it have iron in it?
Mycroft: Because iron is one of the most abundant elements on Earth, formed in the cores of stars and distributed throughout the planet during its formation.
Little Y/N: Why were there stars?
Mycroft: Gravitational collapse of interstellar gas clouds. An inevitable consequence of fundamental physics.
Little Y/N: Why is there physics?
Mycroft: Because the universe is governed by a set of consistent, quantifiable laws. We don't know why the laws themselves exist, only that they do. It is a brute fact. Can we stop now?
Little Y/N: Why?
Mycroft: Because my work requires a level of concentration that is incompatible with a relentless deconstruction of causal reality.
Little Y/N: But why do you have to concentrate?
Mycroft: Sherlock. Make it stop.
Sherlock: *Sipping his tea* Oh, I don't know, it's fascinating. I think they might actually short-circuit your brain.
